Detection of spatial change points in the mean and covariances of multivariate simultaneous autoregressive models [0.03%]
向量空间自回归模型中均值和协方差的结构突变检测
Philipp Otto,Wolfgang Schmid
Philipp Otto
In this paper, we propose a test procedure to detect change points of multidimensional autoregressive processes. The considered process differs from typical applied spatial autoregressive processes in that it is assumed to evolve from a pre...
Diana J Cole,Rachel S McCrea
Diana J Cole
Discrete state-space models are used in ecology to describe the dynamics of wild animal populations, with parameters, such as the probability of survival, being of ecological interest. For a particular parametrization of a model it is not a...
Identification of subpopulations with distinct treatment benefit rate using the Bayesian tree [0.03%]
利用贝叶斯树识别不同治疗效益率的亚群
Changyu Shen,Yang Hu,Xiaochun Li et al.
Changyu Shen et al.
Characterization of a subpopulation by the difference in marginal means of the outcome under the intervention and control may not be sufficient to provide informative guidance for individual decision and public policy making. Specifically, ...
Local influence diagnostics for hierarchical count data models with overdispersion and excess zeros [0.03%]
具有过度离散和过多零点的分层计数数据模型的地方影响诊断指标
Trias Wahyuni Rakhmawati,Geert Molenberghs,Geert Verbeke et al.
Trias Wahyuni Rakhmawati et al.
We consider models for hierarchical count data, subject to overdispersion and/or excess zeros. Molenberghs et al. () and Molenberghs et al. () extend the Poisson-normal generalized linear-mixed model by including gamma random effects to acc...
A simple procedure to estimate the optimal sample size in case of conjunctive coprimary endpoints [0.03%]
一种估计联合作为主要终点的最优样本量的简便方法
Zsófia Varga,Yu C Tsang,Júlia Singer
Zsófia Varga
For clinical studies in which two coprimary endpoints are necessary for assuring efficacy of the treatment of interest, it is important to determine the minimal sample size needed to attain a certain conjunctive power (i.e., power to reject...
Comparison of design strategies for a three-arm clinical trial with time-to-event endpoint: Power, time-to-analysis, and operational aspects [0.03%]
时间依存终点的三臂临床试验的设计策略比较：功效、分析时间和操作性方面
Elina Asikanius,Kaspar Rufibach,Jasmin Bahlo et al.
Elina Asikanius et al.
To optimize resources, randomized clinical trials with multiple arms can be an attractive option to simultaneously test various treatment regimens in pharmaceutical drug development. The motivation for this work was the successful conduct a...
Inverse probability weighting estimation of the volume under the ROC surface in the presence of verification bias [0.03%]
存在验证偏倚情况下逆概率加权法估计ROC曲面体积
Ying Zhang,Todd A Alonzo;Alzheimer&#x;s Disease Neuroimaging Initiative
Ying Zhang
In diagnostic medicine, the volume under the receiver operating characteristic (ROC) surface (VUS) is a commonly used index to quantify the ability of a continuous diagnostic test to discriminate between three disease states. In practice, v...
Danilo Alunni Fegatelli,Alessio Farcomeni
Danilo Alunni Fegatelli
We propose a method to plan the number of occasions of recapture experiments for population size estimation. We do so by fixing the smallest number of capture occasions so that the expected length of the profile confidence interval is less ...
Correlated versus uncorrelated frailty Cox models: A comparison of different estimation procedures [0.03%]
相关与不相关的脆弱性Cox模型的比较及不同的估计方法
Adel Elghafghuf,Henrik Stryhn
Adel Elghafghuf
In many studies in medicine, including clinical trials and epidemiological investigations, data are clustered into groups such as health centers or herds in veterinary medicine. Such data are usually analyzed by hierarchical regression mode...
Paul-Christian Bürkner,Philipp Doebler,Heinz Holling
Paul-Christian Bürkner
In scientific research, many hypotheses relate to the comparison of two independent groups. Usually, it is of interest to use a design (i.e., the allocation of sample sizes m and n for fixed N=m+n) that maximizes the power of the applied st...